31113101131 has 8 divisors (see below), whose sum is σ = 35582724320. Its totient is φ = 26649701568.

The previous prime is 31113101101. The next prime is 31113101137. The reversal of 31113101131 is 13110131113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31113101131 - 2⁵ = 31113101099 is a prime.

It is a super-2 number, since 2×31113101131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113101137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545186 + ... + 1565191.

It is an arithmetic number, because the mean of its divisors is an integer number (4447840540).

Almost surely, 2^31113101131 is an apocalyptic number.

31113101131 is a deficient number, since it is larger than the sum of its proper divisors (4469623189).

31113101131 is a wasteful number, since it uses less digits than its factorization.

31113101131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111813.

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 31113101131 its reverse (13110131113), we get a palindrome (44223232244).

The spelling of 31113101131 in words is "thirty-one billion, one hundred thirteen million, one hundred one thousand, one hundred thirty-one".